Seam lock for roll roofing



March 8, 1938. w. H. ROBISON SEAM LOCK FOR ROLL ROOFING Filed April 14, 1937 2 Sheets-Sheet' 2 7/ #Boj/;sm By mdom A ttorneys Patented Mar.8,1938 I i Z,110 ,402 i UNITED sTArs 2,110A02 SEAM LOCK FOR. ROLL ROOFING William Herron Robison, Sparta, Ill.

OFFIE Application April 14, 1937, Serial No. 136,917

2 Claims. (CI. 108--33) This invention relates to roofing and more parthe web 6 thereof through the medium of nails or ticularly to a 'Construction of roofing constructed other suitable fastening elements IZ. of fiexible water proof sheet material commonly The vertical' fiange !3 of the looking plate ll supplied in roll form; and an object of the presis disposed against the inner face of the web 6 ent invention is to provide for the efcient olosand said flange !3 'is folded longitudinally upon 5 ing and looking of the seam between the aditselfto provide an integral molding or binder !4 jacent sheets of roll roofng material. within the channel of which is accommodated the The invention together with its objects and webs !i` and 1 and the flange ID of the looking advantages will be best understood from a study strip-8 as clearly shown in Figure 4.

10 of the following description taken in connection The molding l4 will serve to draw thewebs 6 10 with the aocompanying drawings whereinzand 'l of adjacent sheets 5 into intimate faoial Figure 1 is a top plan Viewillustrating the apcontact so that the webs` 6 and 1 of adjaoent plioation of the invention. i i sheets will have an intimate close fit, with the Figures 2, 3, and 4 are detail sectional views molding or vbinder part [4 of the seam lock servshowing the several steps resorted to in closing ing to prevent water from passing between the 15 or looking the seam in aocordanoe with the preswebs 6 and 1.

ent invention. It is thought thata clear understanding of the Figure 5 iS a perspective View of a portion of construction, utility and advantages of an invenone of the seam looking members. tion of this character will be had without a more Figure 6 is a similar view of a oomplemental detailed description. 20 seam looking member. Having thus described the invention, what is Figure 7 is a perspeotive view of a portion of a claimed as new is:- v roofing sheet showing the latter provided with 1. Rollroofing embodying a Sheet Of o fi an integral side web. material having side webs extending upwardly Referring to the drawings by reference nutherefrom, a metallio angle looking strip secured 25 merals it will be seen that the roll roofing sheets in relation to said sheet and one web thereof with are indicated by the reference numeral 5. These one fiange of said looking strip in facial contact sheets 5 are formed from the usual material emwith said one web, and a complemental metallio, ployed, preferably a fiexible waterproof sheet 'angle looking strip assooiated with said sheet and roong material commonly made of a wool felt having avertical fiange in faoial oontact'with the 0 base impregnated with asphaltum or thelike. adjacent web of the sheet and also having a In accordance withthe present invention each downturned fiange spaced longitudinally from the roofing sheet 5 is provided with outwardly turned Vertical flange and overlying the first mentioned integral side webs adapted to oooperate with simlooking strip upon an adjacent sheet of roll roofing ilar side webs of adjacent units to form standing to close and lock the seam between said adjacent 35 seams. These webs are indicated at 6 and 'I and roofing sheets. may be of any suitable type. 2. In combination with a sheet of roll roofing As shown clearly inFigures 2 to 4, inclusive, material having integral upstanding 'side webs, the webs 6 and 'l of adjacent sheets 5 have a fairly an angle strip Secured to the sheet adjacent one 40 close fit, and in accordance with the present in-` edge thereof and having a vertical flange in facial 40 Vention the seam between the webs is closed and contact with the adjacent side webs, and a second looked. To this end there is provided inaccordangle strip Secured to said sheet adjaoent the anoe with the present invention an angle plate 8 opposite edge of the latter, and having a vertical which is Secured to the sheet 5 adjaoent the web fiange in contact with the side web of the sheet, 'I through the medium of fastening elements 9 said flange having a down folded lo'ngitudinal 45 with the vertical flange I!) of the looking unit 8 edge' portion cooperabl'e with the first mentioned in intimate contact with the web 'I and extending angle member to fiange the confronting webs of for the full length of the web. the two sheets in intimate contact between the Complemental to the looking strip 8 is a locksaid vertical flanges of the angle strips.- ing plate or strip l l which is also in the form of an v angle plate and is -secured to thesheet 5 adjacent WILLIAM HERRON ROBISON. 

